""The guy who played it in london didn't look short and dorky. He was tall and sexy haha
"
I didn't see him, but while Alex isn't short, he isn't 6'4" either (hence shorter). And I said can look dorky when needed (see Alex and Taylor for examples of gents who aren't dorky looking off-stage). I'm not sure if a better term would be awkward, but looking dorky is not only something related to looks, but also to their physical demeanor (maybe not walking in the most graceful way, posture either hunched over or completely straight - think Neville Longbottom before like movie 5)"
Adorkable is the word you're looking for.